the pentagon is investigating e- mails general john allen traded with a florida woman. who is she? bob orr and john miller investigate. nancy cordes on the president's next cabinet. who's coming and who's going in the top jobs? the head of the specialty pharmacy linked to a deadly meningitis outbreak is called before congress. jim axelrod on t investigation. and they faced down a mass murderer. elaine quijano with the officer who was shot 12 times as he and his partner stopped a bloodbath. >> i confronted evil in the parking lot and evil was not going to leave. captioning sponsored by cbs this is the "cbs evening news" with scott pelley. >> pelley: good evening. general john allen, the general in charge of the war in afghanistan, is under investigation tonight in connection with the same woman who helped bring down the director of the c.i.a., retired general david petraeus. now general allen's nomination to be supreme allied commander of nato is on hold. two of the top military men of their generation have been brought low by their acquaintance with jill kelley, a tampa socialite s